Hey, it's a great start for some kind of mini game.

But still I think you should polish a movement a bit, it seems a bit junky for me. Also, those giant snowballs ain't much a danger for a player as you can easily climb on them. 

Aesthetics is cute and I liked assets combination, good job on this!

By the way, it would be better to change text to a vector based as it blurry a bit. If you are using Unity just use Text Mesh Pro instead of a basic Text component and UI will look good!

Anyways, keep it up, guys! If this is your first game - take my appreciation, because it's much better than my first game :P